Lock-hinge



L. E. HARVIE.,

LoGK HINGE.

4(No ModeI.)

Patented July 9, 18894.

rate locking-bolt.

lUNITED STATES PATENT OFFICE.

LEVIS E. HARVIE, OF FRANKFORT, KENTUCKY.

LOCK-HINGE.

SPECIFICATION forming part of Letters Patent No. 406,730, dated July 9, 1889. Application led December 17, 1888. Serial No. 293,770. (No model.)

To aZZ whom, it may concern:

Be it known that I, LEWIS E. HARVIE, resid- -ing at Frankfort, in the county of Franklin and State of Kentucky, have invented certain new and useful Improvements in Clasp or Lock Hinges, of which the following is a speciiication, reference being had therein to the accompanying drawings.

This invention relates tohinges, especially to hinges in which a check or lock serves to hold the hinge closed against considerable pressure.

The invention consists in a hinge having a projection on one leaf, which closes between or against a friction-clasp behind the other leaf, and which` may have a separat-e lock to hold the hinge securely closed against opening without use of a key or breakage of some part of the mechanism.

In the drawings, Figure l is a horizontal section or diagram showing manner of applying the hinge to a door. Fig. 2 is a cross-section of a hinge, showing friction-ball clasps and a separate lock, the hinge being partly open. Fig. 3 is a similar section through a hinge, showing cylindrical friction-clasps operating on an arrow-head catch and a sepa- Fig. 4 is a sect-ion through a hinge, showing friction-balls operating on a ball-catch. Fig. 5 is a modification. Fig. 6 is a face view of the catch, Fig. 1. Fig. 7 is an end View of hinge with modified lock, -and Fig. 8 a detail of locking device.

A indicates one leaf of a hinge. This leaf has projecting from its face in any convenient position a pointed catch B. The catch B is shown in Fig. 6 as a flat piece with convex cups or spaces B on each side and near the free end thereof. In Fig. 4 the catchis shown with a spherical head B2, and in Fig. 3 with an arrow-head B3. spring is marked C in the drawings. This leaf C has a spring-clasp attached or applied to its rear or side surface in any suitable position, and is mortised or slotted for the passage of the catch B. The mortise in leaf C is shown at D. A suitable boxing E, attached to leaf C, contains springs F F and frictionballs, cylinders, or buttons G G;

The tendency of the springs F F is to hold the balls, cylinders, or buttons G directly in front ofthe mortise D, so that when the leaves The other leaf of the of the hinge are turned together the pointed end of the catch will enter between these pieces G and crowd them apart.- After the end of catch B has passed between the pieces G the springs will close these parts G behind the ball or arrow-head at the end of the catch or into the depressions therein, thus holding the leaves of the hinge closed against a very considerable force, (the amount efforce required depending on the strength of the springs used,) but not holding them absolutely locked.

In addition, the leaf C may have a bolt K, which slides into a hold B5 in catch B when it is desired to absolutely lock the hinge, holding the hinge closed with a positive lock until bolt K is withdrawn by a key. Bolt K may operate in any manner usual in locks or catches, the form illustrated being merely one of many which will occur at once to the skilled mechanic. A locking-pin may enter a hole in ball B2 (or arrow-head) or in the side of the projection B; or a small clasp K may pass in small grooves on both sides of the projection B; or a locking-pin G may enterahole in either one or both of the balls or cylinders G G.

It will be understood that the lock K is an adjunct. The clasp G will operate to hold the catch with very considerable force independently of the positive lock.

In opening the door, lid, or other part t0 which the hinge is applied, assuming the lock K to be released, the pressure on the leaf A of the hinge must be enough to withdraw the catch B from between its clasps against the force of the springs F before the hinge will open.

The modification shown in Fig. 5, with springs F bearing directly on catch B, without intervening bearing-pieces, is believed to be the mechanical equivalent of my device above described.

It' will be understood that the pocket at the rear of leaf C, to contain the clasps, may be an opening in the vjamb instead of an attachment to the leaf. (See Fig. l.) These hinges may be used with advantage on swing or other doors where latches would be inconvenient. The spring-clasps will hold the hinge, and consequently the door, closed against a inoderate pressure, but permit it to open as soon IOO as the force applied to the door overcomes that of the springs F. The hinges may also be applied to desk-lids, table leaves and legs, shutters, gates, trunk-covers, folding chairs, folding sofas, and similar articles, and at numerous other places Where hinges are employed. fr

It will be understoodthat the balls and springs can be removed and replaced when Worn or broken, and that a ball may be substituted for a cylinder, or vice versa, and also a ball for an arrow-head catch, or vice versa.

The catch B may be screwed into the leaf A or adjustably held in other suitable manner, so that the ball or enlargement at its end may pass a greater or less distance through the slot or mortise D.

1. A hinge having a catch rigidly aiiixed to and projecting from the face of one leaf at a distance from the pintle, and the opposite hinge-leaf mortised opposite said catch and having a spring-clasp engaging said catch only when the hinge is closed, substantially as described.

2. Theleaf of a hinge having a rigid catch projecting from the face thereof at a distance from the pintle, and the opposite leaf having a slot or mortise therein at a position opposite the catch, and a pair of spring-pressed balls or cylinders behind said mortise in position to engage the catch only When the hinge is closed, all in combination, substantially as described.

3. The combination, with one leaf of a hinge, of a catch projecting from the face thereof, the opposite leaf of the hinge having a mortise through which said catch passes When the hinge is closed, and a positive lockingpiece which may engage said catch and lock the hinge closed, as set forth.

4. The combination, with the leaves of a hinge, of a catch on one leaf, a friction-clasp on the other leaf operating on said catch,and a positive' lock, also operating on the catch, substantially as described.

In testimony whereof I afiix my signature in presence of two Witnesses. Y

LEWVIS E. HARVIE.

Witnesses:

PHILIP MAURO, W. A. BARTLETT. 

